601
FNCA52 TJSJ 130730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST TUE OCT 13 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-132000-
SOUTHEAST COASTAL PLAINS-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 20 50
TEMP (24H TREND) 89 (-1) 74 (-1) 90
RH % (24H TREND) 57 (-5) 95 (+5) 54
WIND 20FT/EARLY(MPH) E 14 NE 9 NE 13
WIND 20FT/LATE(MPH) E 14 NE 9 E 16
MIXING HGT(FT-AGL/MSL)4310 5090
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 43100 50900
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-132000-
SOUTHERN HILLS-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 40 60
TEMP (24H TREND) 87 (+1) 70 (-3) 87
RH % (24H TREND) 65 (-1) 98 (+4) 62
WIND 20FT/EARLY(MPH) NE 10 NE 6 NE 11
WIND 20FT/LATE(MPH) E 10 NE 8 E 11
MIXING HGT(FT-AGL/MSL)4660 5520
TRANSPORT WND (MPH) E 10 E 10
VENT RATE (KT-FT) 41940 49680
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-132000-
NORTH COASTAL PLAINS-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 20 50
TEMP (24H TREND) 89 (-1) 74 (-2) 90
RH % (24H TREND) 67 (+2) 97 (+3) 65
WIND 20FT/EARLY(MPH) E 12 E 11 E 12
WIND 20FT/LATE(MPH) E 14 E 10 E 14
MIXING HGT(FT-AGL/MSL)4250 4810
TRANSPORT WND (MPH) E 14 E 14
VENT RATE (KT-FT) 51000 57720
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-132000-
NORTHERN HILLS-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 30 60
TEMP (24H TREND) 89 (0) 71 (-2) 89
RH % (24H TREND) 68 (+3) 99 (+2) 66
WIND 20FT/EARLY(MPH) E 11 E 9 E 10
WIND 20FT/LATE(MPH) NE 11 E 9 NE 12
MIXING HGT(FT-AGL/MSL)4680 4900
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 46800 49000
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-132000-
WEST COAST-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 80 40 70
TEMP (24H TREND) 90 (-1) 72 (-2) 91
RH % (24H TREND) 64 (0) 99 (+5) 61
WIND 20FT/EARLY(MPH) E 12 NE 9 E 12
WIND 20FT/LATE(MPH) E 10 NE 10 SE 8
MIXING HGT(FT-AGL/MSL)4070 4260
TRANSPORT WND (MPH) E 7 E 8
VENT RATE (KT-FT) 24420 29820
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-132000-
EASTERN INTERIOR-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 40 50
TEMP (24H TREND) 88 (0) 72 (-2) 89
RH % (24H TREND) 66 (+3) 98 (+2) 63
WIND 20FT/EARLY(MPH) E 10 E 9 E 11
WIND 20FT/LATE(MPH) E 9 NE 9 E 10
MIXING HGT(FT-AGL/MSL)4780 6100
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 47800 61000
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-132000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 40 60
TEMP (24H TREND) 84 (+1) 70 (-3) 86
RH % (24H TREND) 70 (+1) 100 (+2) 67
WIND 20FT/EARLY(MPH) E 9 E 6 E 9
WIND 20FT/LATE(MPH) E 9 NE 6 E 9
MIXING HGT(FT-AGL/MSL)3780 4730
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 37800 47300
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-132000-
CENTRAL MOUNTAIN RANGE-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 90 50 70
TEMP (24H TREND) 85 (+2) 68 (-3) 86
RH % (24H TREND) 70 (0) 99 (+4) 67
WIND 20FT/EARLY(MPH) E 9 NE 6 NE 9
WIND 20FT/LATE(MPH) NE 6 NE 8 E 8
MIXING HGT(FT-AGL/MSL)5080 5580
TRANSPORT WND (MPH) E 9 E 9
VENT RATE (KT-FT) 40640 44640
DISPERSION 5 5
DSI 5 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-132000-
CAYEY MOUNTAIN RANGE-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 20 40
TEMP (24H TREND) 84 (0) 69 (-3) 85
RH % (24H TREND) 70 (+3) 100 (+2) 68
WIND 20FT/EARLY(MPH) NE 9 NE 5 NE 10
WIND 20FT/LATE(MPH) E 9 NE 5 E 10
MIXING HGT(FT-AGL/MSL)4380 5350
TRANSPORT WND (MPH) E 12 E 13
VENT RATE (KT-FT) 43800 58850
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-132000-
VIEQUES-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 50
TEMP (24H TREND) 89 (0) 77 (-1) 90
RH % (24H TREND) 64 (+3) 92 (+2) 63
WIND 20FT/EARLY(MPH) E 12 E 10 E 13
WIND 20FT/LATE(MPH) E 10 E 11 E 11
MIXING HGT(FT-AGL/MSL)3210 3420
TRANSPORT WND (MPH) E 14 E 14
VENT RATE (KT-FT) 38520 41040
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-132000-
CULEBRA-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 60 60
TEMP (24H TREND) 90 (+1) 79 (-1) 91
RH % (24H TREND) 63 (-1) 90 (+3) 62
WIND 20FT/EARLY(MPH) E 12 E 10 E 12
WIND 20FT/LATE(MPH) E 11 E 11 E 11
MIXING HGT(FT-AGL/MSL)3170 3340
TRANSPORT WND (MPH) E 15 E 14
VENT RATE (KT-FT) 41210 40080
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-132000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 40 60
TEMP (24H TREND) 91 (0) 74 (-2) 92
RH % (24H TREND) 56 (-4) 96 (+10) 56
WIND 20FT/EARLY(MPH) E 13 NE 6 E 11
WIND 20FT/LATE(MPH) E 14 NE 9 SE 12
MIXING HGT(FT-AGL/MSL)4340 4610
TRANSPORT WND (MPH) E 9 E 9
VENT RATE (KT-FT) 34720 36880
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-132000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 50 60 30
TEMP (24H TREND) 88 (+1) 76 (-3) 88
RH % (24H TREND) 68 (+1) 94 (+5) 68
WIND 20FT/EARLY(MPH) E 12 E 11 E 12
WIND 20FT/LATE(MPH) E 11 E 11 E 11
MIXING HGT(FT-AGL/MSL)3030 3330
TRANSPORT WND (MPH) E 15 E 15
VENT RATE (KT-FT) 39390 43290
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-132000-
ST CROIX-
330 AM AST TUE OCT 13 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 50 60 40
TEMP (24H TREND) 89 (+1) 77 (-2) 90
RH % (24H TREND) 68 (+1) 95 (+4) 66
WIND 20FT/EARLY(MPH) E 11 E 10 E 12
WIND 20FT/LATE(MPH) E 10 E 11 E 12
MIXING HGT(FT-AGL/MSL)3850 4440
TRANSPORT WND (MPH) E 14 E 15
VENT RATE (KT-FT) 46200 57720
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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